Two locomotives approach each other on parallel tracks. each has a speed of v = 80 km/h with respect to the ground. if they are initially d = 9.0 km apart, how long will it be before they reach each other? (min)

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)